Android Open Source - built.io-todo-android U I Android Explorer Screen

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Java Source Code

package com.raweng.built.userInterface;
//from   w  ww.  j  ava2s.  com
import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;


/**
 * Simple file manager.
 * 
 * @author raw engineering, Inc
 *
 */
public class UIAndroidExplorerScreen extends ListActivity {

  private final String TAG = "UIAndroidExplorerScreen";

  // Stores names of traversed directories
  private ArrayList<String> directoryName = new ArrayList<String>();

  // Check if the first level of the directory structure is the one showing
  private Boolean firstLevel = true;
  private Item[] fileList;
  private File path = new File(Environment.getExternalStorageDirectory() + "");
  private String chosenFile;
  private ListAdapter adapter;



  public UIAndroidExplorerScreen(){
  }

  // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.builtio_list_choose_file_name);
    loadFileList();
  }

  private class Item {
    public String file;
    public int icon;

    public Item(String file, Integer icon) {
      this.file = file;
      this.icon = icon;
    }

    @Override
    public String toString() {
      return file;
    }
  }

  private void loadFileList() {
    try {
      path.mkdirs();

      // Checks whether path exists
      if (path.exists()) {
        FilenameFilter filter = new FilenameFilter() {
          @Override
          public boolean accept(File dir, String filename) {
            File sel = new File(dir, filename);
            // Filters based on whether the file is hidden or not
            return (sel.isFile() || sel.isDirectory()) && !sel.isHidden();

          }
        };

        String[] fList = path.list(filter);
        fileList = new Item[fList.length];
        for (int i = 0; i < fList.length; i++) {
          fileList[i] = new Item(fList[i], R.drawable.ic_builtio_file);
          // Convert into file path
          File sel = new File(path, fList[i]);

          // Set drawables
          if (sel.isDirectory()) {
            fileList[i].icon = R.drawable.ic_builtio_folder;
          } else {
          }
        }

        if (!firstLevel) {
          Item temp[] = new Item[fileList.length + 1];
          for (int i = 0; i < fileList.length; i++) {
            temp[i + 1] = fileList[i];
          }
          temp[0] = new Item("\\", Color.TRANSPARENT);
          fileList = temp;
        }
      } else {
        Log.i(TAG, "path does not exist");
      }

      adapter = new ArrayAdapter<Item>(this, R.layout.builtio_fileselect_row_inpicker, this.fileList) {

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
          View view = super.getView(position, convertView, parent);
          try {
            TextView rowtext = (TextView) view.findViewById(R.id.rowtext);

            // put the image on the text view
            rowtext.setCompoundDrawablesWithIntrinsicBounds(fileList[position].icon, 0, 0, 0);

            // add margin between image and text (support various
            // screen
            // densities)
            int dp5 = (int) (5 * getResources().getDisplayMetrics().density + 0.5f);
            rowtext.setCompoundDrawablePadding(dp5);
          } catch (Exception error) {
            error.printStackTrace();
          }

          return view;
        }

      };

      setListAdapter(adapter);
    } catch (SecurityException error) {
      
      error.printStackTrace();
      
    } catch (NullPointerException error) {
      
      error.printStackTrace();
      
    } catch (Exception error) {
      
      error.printStackTrace();
    }

  }

  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {

    try {
      final String filePath = path.getAbsolutePath().replace("/storage/sdcard0", "/sdcard");
      chosenFile = fileList[position].file;

      File sel = new File(path + "/" + chosenFile);
      if (sel.isDirectory()) {
        firstLevel = false;
        // Adds chosen directory to list
        directoryName.add(chosenFile);
        fileList = null;
        path = new File(sel + "");

        loadFileList();
      }

      // Checks if 'up' was clicked
      else if (chosenFile.equalsIgnoreCase("\\") && !sel.exists()) {
        // present directory removed from list
        String s = directoryName.remove(directoryName.size() - 1);

        // path modified to exclude present directory
        path = new File(path.toString().substring(0, path.toString().lastIndexOf(s)));
        fileList = null;
        // if there are no more directories in the list, then
        // its the first level

        if (directoryName.isEmpty()) {
          firstLevel = true;
        }
        loadFileList();
      }
      // File picked
      else {
        // Perform action with file picked
        new AlertDialog.Builder(this).setIcon(R.drawable.ic_builtio_attach_icon).setTitle("[" + chosenFile + "]").setPositiveButton("OK", new DialogInterface.OnClickListener() {

          // @Override
          public void onClick(DialogInterface dialog, int which) {
            Intent intent = new Intent();
            intent.putExtra("fileName", chosenFile);
            intent.putExtra("filePath", filePath + "/" + chosenFile);
            setResult(Activity.RESULT_OK, intent);
            finish();
          }
        }).show();
      }
    } catch (Exception e) {
      e.printStackTrace();
    }

  }

}
Java Source Code List
